CN206389273U - A kind of power supply adaptor - Google Patents
A kind of power supply adaptor Download PDFInfo
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- CN206389273U CN206389273U CN201720050462.3U CN201720050462U CN206389273U CN 206389273 U CN206389273 U CN 206389273U CN 201720050462 U CN201720050462 U CN 201720050462U CN 206389273 U CN206389273 U CN 206389273U
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Abstract
The utility model discloses a kind of power supply adaptor, including exchange input EMC circuits, first current rectifying and wave filtering circuit, high frequency transformer circuit, output rectifier and filter, constant voltage circuit and power circuit, the input of exchange input EMC circuits is with exchanging electrical connection, the output end of exchange input EMC circuits is connected with the input of the first current rectifying and wave filtering circuit, the output end of first current rectifying and wave filtering circuit is connected with the input of high frequency transformer circuit, the output end of high frequency transformer circuit and the input of output rectifier and filter are connected, the input of the output end of constant voltage circuit respectively with high frequency transformer circuit, the input connection of output rectifier and filter, the input of the output end of power circuit respectively with constant voltage circuit, the input connection of output rectifier and filter.A kind of power supply adaptor of the utility model can reduce circuit interference and reduction output ripple voltage, improve power source charges efficiency.The utility model can be widely applied to adapter field as a kind of power supply adaptor.
Description
Technical field
The utility model is related to adapter field, especially a kind of power supply adaptor.
Background technology
The main linear power supply of power supply and Switching Power Supply（Power supply adaptor）Two major classes, the DC voltage of output is one solid
Definite value, by alternating voltage is rectified, filtering, is obtained after voltage stabilizing.It is not thorough due to filtering, alternating component is contained in DC voltage,
This generates ripple.Ripple is a kind of complicated noise signal, and it is the week fluctuated back and forth up and down around output DC voltage
Phase property signal, but cycle and amplitude are not definite values, are changed over time, and the ripple waveform of different electrical power is different.Power supply adaptor
The ripple of generation is more complicated, be difficult to filter out and amplitude is larger.The ripple of general power supply adaptor will than the ripple of linear power supply
Greatly, frequency will height.
High frequency ripple derives from switch transformed circuit.The switching tube of power supply adaptor all can when conducting and cut-off
There is a rising and falling time, at this time just occur that a frequency with switching the rise and fall time is identical in circuit
Or the noise of odd number frequency multiplication, generally tens MHz.Same diode is in Reverse recovery moment, and its equivalent circuit is resistance electricity
Hold the series connection with inductance, resonance can be caused, the noise frequency of generation is also tens MHz；The leakage inductance of also high frequency transformer also can
Produce High-frequency Interference.For the ripple way of traditional power adaptor, it is necessary to reduce the ripple of power supply adaptor, ripple voltage
Gao Liao, it is possible to make electronic product produce harmonic wave, modulation etc., disturbs the normal working condition of electronic product；Cause power-efficient
Reduction；Influence the logical relation of digital circuit；The normal delivery of interference signal；Too high ripple can disturb digital circuit, can shadow
Ring stability of charging circuit etc.；Stronger ripple can produce surge voltage or electric current, it is possible to burn charging equipment.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model, which is to provide, a kind of can efficiently reduce ripple voltage
Power supply adaptor.
The technical scheme that the utility model is used is：A kind of power supply adaptor, including exchange input EMC circuits, first
Current rectifying and wave filtering circuit, high frequency transformer circuit, output rectifier and filter, constant voltage circuit and power circuit, the exchange input
The input of EMC circuits is defeated with the first current rectifying and wave filtering circuit with exchanging electrical connection, the output end for exchanging input EMC circuits
Enter end connection, the output end of first current rectifying and wave filtering circuit is connected with the input of high frequency transformer circuit, and the high frequency becomes
The input of the output ends of transformer circuits and output rectifier and filter is connected, the output end of the constant voltage circuit respectively with high frequency
The input connection of the input of transformer circuit, output rectifier and filter, for for high frequency transformer circuit, output rectification
Filter circuit provides stable operating voltage, the output end of power circuit input respectively with constant voltage circuit, exports whole
Flow the input connection of filter circuit.
Further, the output rectifier and filter includes the second current rectifying and wave filtering circuit, the second rectifying and wave-filtering electricity
Road includes commutation diode, the first electrochemical capacitor, the second electrochemical capacitor, the 3rd electrochemical capacitor, the 4th electrochemical capacitor and bar magnet electricity
Sense, the positive pole of the commutation diode is connected with the lower end of the first electrochemical capacitor, first electrochemical capacitor and commutation diode
It is connected in parallel by the output end of the upper end of the first electrochemical capacitor, the negative pole of commutation diode and high frequency transformer circuit, it is described
The negative pole of commutation diode is connected with constant voltage circuit, and first electrochemical capacitor, the second electrochemical capacitor, the 3rd electrochemical capacitor are in parallel
Connection, the output end of the power circuit is connected with the upper end of the second electrochemical capacitor, the upper end of the 3rd electrochemical capacitor and magnetic
The left end connection of rod inductance, the 4th electrochemical capacitor is connected in parallel between the right-hand member of bar magnet inductance, the lower end of the 3rd electrochemical capacitor,
The two ends of 4th electrochemical capacitor as the second current rectifying and wave filtering circuit output end.
Further, the output rectifier and filter also includes the first filter circuit, second current rectifying and wave filtering circuit
Output end be connected with the input of the first filter circuit, first filter circuit include first resistor, the first anti-interference magnetic
Ring wave filter and the first anti-interference capacitor, the first resistor are connected in parallel with the 4th electrochemical capacitor, the first resistor and the
One anti-interference magnetic ring filter is connected in parallel, and the first anti-interference magnetic ring filter is connected in parallel with the first anti-interference capacitor,
The output end of the constant voltage circuit and the upper end of first resistor are connected, the lower end ground connection of the first resistor, and described first is anti-dry
The two ends for disturbing electric capacity are used as the output end of the power supply adaptor.
Further, the exchange input EMC circuits are anti-including second resistance, the second anti-interference magnetic ring filter and second
Interference capacitors, the two ends of second anti-interference capacitor are with exchanging electrical connection, the upper end and second of second anti-interference capacitor
The left end connection of resistance, the second anti-interference magnetic ring filter is connected in parallel on the right-hand member and the second anti-interference capacitor of second resistance
Between lower end.
Further, first current rectifying and wave filtering circuit includes bridge rectifier and the first electric capacity, and the exchange inputs EMC
The output end of circuit and the input of bridge rectifier are connected, and the output end of the bridge rectifier is in parallel with the first electric capacity even
Connect.
Further, the high frequency transformer circuit includes peak absorbing circuit, transformer and transformer coupled driving electricity
Road, the output end of constant voltage circuit input respectively with transformer coupled drive circuit, output rectifier and filter it is defeated
Enter end connection, the output end of first current rectifying and wave filtering circuit and the input of peak absorbing circuit are connected, the peak absorbing
The output end of circuit and the first primary coil of transformer are connected, and the transformer coupled drive circuit is electric with peak absorbing respectively
Road, the second primary coil connection of transformer, the second primary coil ground connection of the transformer, the secondary coil of the transformer
It is connected with the input of output rectifier and filter.
Further, the constant voltage circuit include optocoupler, voltage-stablizer and synchronous rectifying controller, the power circuit it is defeated
Go out end first input end, the input of voltage-stablizer respectively with optocoupler to be connected, the second input of the optocoupler and voltage-stablizer
Input is connected, and the first output end of the optocoupler is connected with the input of high frequency transformer circuit, and the second of the optocoupler is defeated
Go out end ground connection, the earth terminal ground connection of the voltage-stablizer, the output end of the voltage-stablizer is connected with earth terminal, the voltage-stablizer it is defeated
Go out end to be connected with the input of synchronous rectifying controller, the output end and output rectifier and filter of the synchronous rectifying controller
Input connection.
Further, the peak absorbing circuit includes voltage-regulator diode, 3rd resistor, high voltage ceramic capacitor and first
Diode, the positive pole of the voltage-regulator diode and the upper end of 3rd resistor are connected, lower end and the pole of voltage stabilizing two of the 3rd resistor
The negative pole connection of pipe, the higfh-tension ceramics electric capacity is connected in parallel with 3rd resistor, the negative pole of first diode and the 3rd electricity
The lower end connection of resistance, the positive pole of the voltage-regulator diode as peak absorbing circuit input, the upper end of the 3rd resistor,
Output end of the positive pole of first diode respectively as peak absorbing circuit.
Further, the transformer coupled drive circuit includes power supply control chip and its peripheral circuit.
Further, the voltage-stablizer includes adjustable precise shunt regulator.
The beneficial effects of the utility model are：A kind of power supply adaptor of the utility model by the input in adapter and
Output end sets exchange input EMC circuits, the first current rectifying and wave filtering circuit and output rectifier and filter, reduces circuit interference and drops
Output ripple and low voltage, improves power source charges efficiency；Ensure the normal delivery of signal；More consolidate the stability of circuit, make to fill
Electric equipment work is smooth.
In addition, output rectifier and filter includes the second current rectifying and wave filtering circuit and the first filter circuit, with reference to the first rectification
Filter circuit realizes multilayer rectifying and wave-filtering, can efficiently reduce the output ripple voltage of power supply adaptor.
Brief description of the drawings
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is a kind of structured flowchart of power supply adaptor of the utility model；
Fig. 2 is an a kind of specific embodiment circuit diagram of power supply adaptor of the utility model.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.
A kind of power supply adaptor, with reference to Fig. 1, Fig. 1 is a kind of structured flowchart of power supply adaptor of the utility model, and power supply is fitted
Orchestration includes exchange input EMC circuits, the first current rectifying and wave filtering circuit, high frequency transformer circuit, output rectifier and filter, constant pressure
Circuit and power circuit, the input of exchange input EMC circuits and exchanges electrical connection, exchange the output end that inputs EMC circuits and
The input connection of first current rectifying and wave filtering circuit, the output end of the first current rectifying and wave filtering circuit and the input of high frequency transformer circuit
Connection, the output end of high frequency transformer circuit and the input of output rectifier and filter are connected, the output end point of constant voltage circuit
The input of input, output rectifier and filter not with high frequency transformer circuit is connected, for for high frequency transformer circuit,
Output rectifier and filter provides stable operating voltage, the output end of power circuit input respectively with constant voltage circuit, defeated
Go out the input connection of current rectifying and wave filtering circuit.
A kind of power supply adaptor of the utility model is set by the input in adapter and output end exchanges input EMC electricity
Road, the first current rectifying and wave filtering circuit and output rectifier and filter, reduce circuit interference and reduction output ripple voltage, improve power supply
Charge efficiency；Ensure the normal delivery of signal；More consolidate the stability of circuit, make charging equipment work smooth.
As the further improvement of technical scheme, with reference to Fig. 1 and Fig. 2, Fig. 1 is a kind of power supply adaptor of the utility model
Structured flowchart, Fig. 2 is an a kind of specific embodiment circuit diagram of power supply adaptor of the utility model, and exchange input EMC circuits 1 are wrapped
Second resistance R3, the second anti-interference magnetic ring filter L2, the second anti-interference capacitor CX1 and its peripheral circuit are included, wherein, second resists
Interference capacitors CX1 two ends are connected with exchanging electrical connection, the second anti-interference capacitor CX1 upper end with second resistance R3 left end,
Second anti-interference magnetic ring filter L2 is connected in parallel between second resistance R3 right-hand member and the second anti-interference capacitor CX1 lower end, tool
The circuit connection of body is as shown in Fig. 2 in the present embodiment, second resistance R3 resistance uses 2 megohms, the second anti-interference magnet ring filter
Ripple device L2 is the anti-interference magnetic ring filters of UU10.5, and the second anti-interference capacitor CX1 uses 275V/0.22uF anti-interference capacitor,
Increase exchanges and input EMC circuits 1, reduce the output ripple voltage of power supply adaptor, strengthen the antijamming capability of power supply adaptor,
To keep its normal working condition.
As the further improvement of technical scheme, with reference to Fig. 1 and Fig. 2, Fig. 1 is a kind of power supply adaptor of the utility model
Structured flowchart, Fig. 2 is an a kind of specific embodiment circuit diagram of power supply adaptor of the utility model, the first current rectifying and wave filtering circuit 2
Including bridge rectifier D B1 and the first electric capacity C1, the output end and bridge rectifier D B1 input of exchange input EMC circuits 1
Connection, bridge rectifier D B1 output end is connected in parallel with the first electric capacity C1, in the present embodiment, and bridge rectifier D B1 is used
The bridge rectifier of KBJ410 models, the first electric capacity C1 uses 400V/68uF high frequency alminium electrolytic condenser.
As the further improvement of technical scheme, with reference to Fig. 1 and Fig. 2, Fig. 1 is a kind of power supply adaptor of the utility model
Structured flowchart, Fig. 2 is an a kind of specific embodiment circuit diagram of power supply adaptor of the utility model, and high frequency transformer circuit includes
Peak absorbing circuit 31, transformer T1 and transformer coupled drive circuit 32, the output end of constant voltage circuit 4 respectively with transformer coupling
Close the input connection of the input of drive circuit 32, output rectifier and filter, the output end of the first current rectifying and wave filtering circuit 2 with
The input connection of peak absorbing circuit 31, the output end of peak absorbing circuit 31 connects with transformer T1 the first primary coil
Connect, second primary coil of the transformer coupled drive circuit 32 respectively with peak absorbing circuit 31, transformer T1 is connected, transformer
T1 the second primary coil ground connection, transformer T1 secondary coil and the input of output rectifier and filter are connected.Further
Ground, peak absorbing circuit 31 includes voltage-regulator diode ZD1,3rd resistor R7, high voltage ceramic capacitor C2 and the first diode D1,
Voltage-regulator diode ZD1 positive pole is connected with 3rd resistor R7 upper end, 3rd resistor R7 lower end and bearing for voltage-regulator diode ZD1
Pole is connected, and higfh-tension ceramics electric capacity C2 is connected in parallel with 3rd resistor R7, under the first diode D1 negative pole and 3rd resistor R7
End connection, voltage-regulator diode ZD1 positive pole is used as the input of peak absorbing circuit 31,3rd resistor R7 upper end, the one or two
Output end of the pole pipe D1 positive pole respectively as peak absorbing circuit 31.
Further, with reference to Fig. 2, Fig. 2 is an a kind of specific embodiment circuit diagram of power supply adaptor of the utility model, is become
Depressor coupling drive circuit 32 is included in power supply control chip IC1 and its peripheral circuit, the present embodiment, power supply control chip IC1
Using the power supply control chip of ME8204 models, transformer coupled drive circuit 32 is used for driving transformer and the coupling as it
Circuit.
As the further improvement of technical scheme, with reference to Fig. 1 and Fig. 2, Fig. 1 is a kind of power supply adaptor of the utility model
Structured flowchart, Fig. 2 is an a kind of specific embodiment circuit diagram of power supply adaptor of the utility model, and constant voltage circuit 4 includes optocoupler
G1, voltage-stablizer IC3 and synchronous rectifying controller IC2 and its peripheral circuit, the output end of power circuit respectively with optocoupler G1
The input connection of one input, voltage-stablizer IC3, optocoupler G1 the second input is connected with voltage-stablizer IC3 input, optocoupler
G1 the first output end is connected with the input of high frequency transformer circuit, optocoupler G1 the second output head grounding, voltage-stablizer IC3's
Earth terminal is grounded, and voltage-stablizer IC3 output end is connected with earth terminal, voltage-stablizer IC3 output end and synchronous rectifying controller IC2
Input connection, the input of synchronous rectifying controller IC2 output end and output rectifier and filter connects.The present embodiment
In, voltage-stablizer IC3 is using adjustable precise shunt regulator ME431, and synchronous rectifying controller IC2 is using FAN6204 models
Synchronous rectifying controller.
As the further improvement of technical scheme, with reference to Fig. 1 and Fig. 2, Fig. 1 is a kind of power supply adaptor of the utility model
Structured flowchart, Fig. 2 is an a kind of specific embodiment circuit diagram of power supply adaptor of the utility model, output rectifier and filter bag
The second current rectifying and wave filtering circuit 51 is included, the second current rectifying and wave filtering circuit 51 includes commutation diode, the first electrochemical capacitor C7, the second electrolysis
Electric capacity C8, the 3rd electrochemical capacitor C9, the 4th electrochemical capacitor C10 and bar magnet inductance L3, the positive pole of commutation diode and the first electrolysis
Electric capacity C7 lower end connection, upper end, the pole of rectification two of the first electrochemical capacitor C7 and commutation diode by the first electrochemical capacitor C7
The output end of the negative pole of pipe and high frequency transformer circuit is connected in parallel, and the negative pole of commutation diode is connected with constant voltage circuit 4, and first
Electrochemical capacitor C7, the second electrochemical capacitor C8, the 3rd electrochemical capacitor C9 are connected in parallel, the output end of power circuit and the second electrolysis electricity
Hold C8 upper end connection, the 3rd electrochemical capacitor C9 upper end is connected with bar magnet inductance L3 left end, and the 4th electrochemical capacitor C10 is in parallel
Between right-hand member, the 3rd electrochemical capacitor C9 lower end in bar magnet inductance L3, the two ends of the 4th electrochemical capacitor C10 are used as second
The output end of current rectifying and wave filtering circuit 51；In the present embodiment, commutation diode is realized using two commutation diodes in parallel, such as
Shown in D4 and D5 in Fig. 2, commutation diode is realized using Schottky barrier diodes；In addition, the first electrochemical capacitor C7, second
Electrochemical capacitor C8, the 3rd electrochemical capacitor C9, the 4th electrochemical capacitor C10 use high frequency low-resistance alminium electrolytic condenser.Second rectifying and wave-filtering
Circuit 51 can substantially reduce the output ripple voltage of power supply adaptor as the current rectifying and wave filtering circuit of output.
As the further improvement of technical scheme, with reference to Fig. 1 and Fig. 2, Fig. 1 is a kind of power supply adaptor of the utility model
Structured flowchart, Fig. 2 is an a kind of specific embodiment circuit diagram of power supply adaptor of the utility model, and output rectifier and filter is also
Including the first filter circuit 52, the output end of the second current rectifying and wave filtering circuit 51 is connected with the input of the first filter circuit 52, the
One filter circuit 52 includes first resistor R21, the first anti-interference magnetic ring filter L4 and the first anti-interference capacitor C11, the first electricity
Resistance R21 and the 4th electrochemical capacitor C10 is connected in parallel, and first resistor R21 is connected in parallel with the first anti-interference magnetic ring filter L4, the
One anti-interference magnetic ring filter L4 and the first anti-interference capacitor C11 is connected in parallel, the output end and first resistor of constant voltage circuit 4
R21 upper end connection, first resistor R21 lower end ground connection, the first anti-interference capacitor C11 two ends are used as the power supply adaptor
Output end.First filter circuit 52 enhances power supply adaptor drop as the secondary filtering circuit of power supply adaptor output end
The ability of output ripple and low voltage.Thus, output rectifier and filter includes the second current rectifying and wave filtering circuit and the first filter circuit,
Multilayer rectifying and wave-filtering is realized with reference to the first current rectifying and wave filtering circuit, the output ripple voltage of power supply adaptor can be efficiently reduced.
Above is preferable implementation of the present utility model is illustrated, but the invention is not limited to the reality
Example is applied, those skilled in the art can also make a variety of equivalent variations on the premise of without prejudice to the utility model spirit
Or replace, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (10)
1. a kind of power supply adaptor, it is characterised in that including exchange input EMC circuits, the first current rectifying and wave filtering circuit, high frequency transformation
Device circuit, output rectifier and filter, constant voltage circuit and power circuit, the input of the exchange input EMC circuits is with exchanging
Electrical connection, the output end of the exchange input EMC circuits is connected with the input of the first current rectifying and wave filtering circuit, first rectification
The output end of filter circuit is connected with the input of high frequency transformer circuit, the output end of the high frequency transformer circuit and output
The input connection of current rectifying and wave filtering circuit, it is the output end of constant voltage circuit input respectively with high frequency transformer circuit, defeated
Go out the input connection of current rectifying and wave filtering circuit, for providing stable work for high frequency transformer circuit, output rectifier and filter
Make voltage, input, the input of output rectifier and filter of the output end of the power circuit respectively with constant voltage circuit connect
Connect.
2. power supply adaptor according to claim 1, it is characterised in that it is whole that the output rectifier and filter includes second
Filter circuit is flowed, second current rectifying and wave filtering circuit includes commutation diode, the first electrochemical capacitor, the second electrochemical capacitor, the 3rd
Electrochemical capacitor, the 4th electrochemical capacitor and bar magnet inductance, the positive pole of the commutation diode are connected with the lower end of the first electrochemical capacitor,
First electrochemical capacitor and commutation diode pass through the upper end of the first electrochemical capacitor, the negative pole of commutation diode and high frequency transformation
The output end of device circuit is connected in parallel, and the negative pole of the commutation diode is connected with constant voltage circuit, first electrochemical capacitor,
Two electrochemical capacitors, the 3rd electrochemical capacitor are connected in parallel, and the output end of the power circuit is connected with the upper end of the second electrochemical capacitor,
The upper end of 3rd electrochemical capacitor is connected with the left end of bar magnet inductance, and the 4th electrochemical capacitor is connected in parallel on the right side of bar magnet inductance
End, between the lower end of the 3rd electrochemical capacitor, the two ends of the 4th electrochemical capacitor as the second current rectifying and wave filtering circuit output end.
3. power supply adaptor according to claim 2, it is characterised in that the output rectifier and filter also includes first
Filter circuit, the output end of second current rectifying and wave filtering circuit is connected with the input of the first filter circuit, first filtering
Circuit includes first resistor, the first anti-interference magnetic ring filter and the first anti-interference capacitor, the first resistor and the 4th electrolysis
Electric capacity is connected in parallel, and the first resistor is connected in parallel with the first anti-interference magnetic ring filter, the first anti-interference magnet ring filter
Ripple device is connected in parallel with the first anti-interference capacitor, and the upper end of the output end of the constant voltage circuit and first resistor is connected, and described the
The lower end ground connection of one resistance, the two ends of first anti-interference capacitor as the power supply adaptor output end.
4. power supply adaptor according to claim 3, it is characterised in that the exchange input EMC circuits include the second electricity
Resistance, the second anti-interference magnetic ring filter and the second anti-interference capacitor, the two ends of second anti-interference capacitor with exchanging electrical connection,
The left end of the upper end of second anti-interference capacitor and second resistance is connected, and the second anti-interference magnetic ring filter is connected in parallel on the
Between the lower end of the right-hand member of two resistance and the second anti-interference capacitor.
5. the power supply adaptor according to any one of Claims 1-4, it is characterised in that first current rectifying and wave filtering circuit
Including bridge rectifier and the first electric capacity, the output end of the exchange input EMC circuits and the input of bridge rectifier are connected,
The output end of the bridge rectifier is connected in parallel with the first electric capacity.
6. power supply adaptor according to claim 5, it is characterised in that the high frequency transformer circuit includes peak absorbing
Circuit, transformer and transformer coupled drive circuit, the output end of the constant voltage circuit respectively with transformer coupled drive circuit
Input, output rectifier and filter input connection, the output end and peak absorbing of first current rectifying and wave filtering circuit
The input connection of circuit, the output end of the peak absorbing circuit and the first primary coil of transformer are connected, the transformation
Second primary coil of the device coupling drive circuit respectively with peak absorbing circuit, transformer is connected, the transformer second at the beginning of
Level coil ground connection, the secondary coil of the transformer and the input of output rectifier and filter are connected.
7. power supply adaptor according to claim 6, it is characterised in that the constant voltage circuit include optocoupler, voltage-stablizer and
Synchronous rectifying controller, first input end, the input of voltage-stablizer of the output end of the power circuit respectively with optocoupler is connected,
Second input of the optocoupler and the input of voltage-stablizer are connected, the first output end and the high frequency transformer circuit of the optocoupler
Input connection, the second output head grounding of the optocoupler, the voltage-stablizer earth terminal ground connection, the output of the voltage-stablizer
End is connected with earth terminal, and the output end of the voltage-stablizer and the input of synchronous rectifying controller are connected, the synchronous rectification control
The output end of device processed and the input of output rectifier and filter are connected.
8. power supply adaptor according to claim 6, it is characterised in that the peak absorbing circuit includes the pole of voltage stabilizing two
Pipe, 3rd resistor, high voltage ceramic capacitor and the first diode, the positive pole of the voltage-regulator diode and the upper end of 3rd resistor connect
Connect, the lower end of the 3rd resistor and the negative pole of voltage-regulator diode are connected, and the higfh-tension ceramics electric capacity is in parallel with 3rd resistor even
Connect, the negative pole of first diode and the lower end of 3rd resistor are connected, and the positive pole of the voltage-regulator diode is used as peak absorbing
The input of circuit, the upper end of the 3rd resistor, the first diode positive pole respectively as peak absorbing circuit output end.
9. power supply adaptor according to claim 8, it is characterised in that the transformer coupled drive circuit includes power supply
Control chip and its peripheral circuit.
10. power supply adaptor according to claim 7, it is characterised in that it is in parallel that the voltage-stablizer includes adjustable precise
Voltage-stablizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720050462.3U CN206389273U (en) | 2017-01-13 | 2017-01-13 | A kind of power supply adaptor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720050462.3U CN206389273U (en) | 2017-01-13 | 2017-01-13 | A kind of power supply adaptor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206389273U true CN206389273U (en) | 2017-08-08 |
Family
ID=59494018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720050462.3U Expired - Fee Related CN206389273U (en) | 2017-01-13 | 2017-01-13 | A kind of power supply adaptor |
Country Status (1)
| Country | Link |
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| CN (1) | CN206389273U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233718A (en) * | 2018-01-29 | 2018-06-29 | 新日(无锡)发展有限公司 | A kind of inverse-excitation type switch power-supply for accumulator |
| CN110289884A (en) * | 2019-08-01 | 2019-09-27 | 中凯照明规划设计(深圳)有限公司 | A kind of wireless transceiver |
| CN113765366A (en) * | 2021-09-27 | 2021-12-07 | 深圳市明鑫电源技术有限公司 | Anti-interference circuit and power adapter |
-
2017
- 2017-01-13 CN CN201720050462.3U patent/CN206389273U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233718A (en) * | 2018-01-29 | 2018-06-29 | 新日(无锡)发展有限公司 | A kind of inverse-excitation type switch power-supply for accumulator |
| CN110289884A (en) * | 2019-08-01 | 2019-09-27 | 中凯照明规划设计(深圳)有限公司 | A kind of wireless transceiver |
| CN113765366A (en) * | 2021-09-27 | 2021-12-07 | 深圳市明鑫电源技术有限公司 | Anti-interference circuit and power adapter |
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